How to remove dot at last position from every value in R data frame column?

To remove dot at last position from every value in R data frame column, we can follow the below steps −

• First of all, create a data frame with a column having dot at last position in every value.

• Then, use gsub function to remove the dot at last position from every value in the column.

Example

Create the data frame

Let’s create a data frame as shown below −

x<-sample(c("A.","B.","C.","D.","E.","F.","G."),25,replace=TRUE)
df<-data.frame(x)
df

Output

On executing, the above script generates the below output(this output will vary on your system due to randomization) −

   x
1  B.
2  D.
3  C.
4  F.
5  D.
6  E.
7  D.
8  C.
9  C.
10 A.
11 B.
12 E.
13 D.
14 D.
15 B.
16 D.
17 A.
18 F.
19 C.
20 G.
21 B.
22 B.
23 G.
24 G.
25 D.

Remove last dot

Using gsub function to remove the dot at last position from every value in column x as shown below −

x<-sample(c("A.","B.","C.","D.","E.","F.","G."),25,replace=TRUE)
df<-data.frame(x)
df$new_x<-gsub(".$","",df$x)
df

Output

   x new_x
1  B. B
2  D. D
3  C. C
4  F. F
5  D. D
6  E. E
7  D. D
8  C. C
9  C. C
10 A. A
11 B. B
12 E. E
13 D. D
14 D. D
15 B. B
16 D. D
17 A. A
18 F. F
19 C. C
20 G. G
21 B. B
22 B. B
23 G. G
24 G. G
25 D. D